CVE-2026-46229 (GCVE-0-2026-46229)

Vulnerability from cvelistv5 – Published: 2026-05-28 09:40 – Updated: 2026-06-14 18:04
VLAI
Title
drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure
Summary
In the Linux kernel, the following vulnerability has been resolved: drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure KFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE but not AMDGPU_GEM_CREATE_VRAM_CLEARED, leaving freshly allocated VRAM with stale data from prior use observable by compute kernels. The GEM ioctl path already sets VRAM_CLEARED for all userspace allocations via amdgpu_gem_create_ioctl() and amdgpu_mode_dumb_create(). The KFD path was missing this flag, allowing stale page table remnants to leak into user buffers. This causes crashes in RCCL P2P transport where non-zero data in ptrExchange/head/tail fields corrupts the protocol handshake.
Severity
5.5 (Medium)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
Assigner
References
Impacted products
Vendor Product Version CPE status
Linux Linux Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < 1db431380879fd9d28b763a88a0c0431be5be8df (git)
Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < 32b153658f017ad2f5bf8aab479e8d16ac95bc3a (git)
Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < 77d0b5d11387071770246fd0185a69fa28e8e109 (git)
Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < 047d44d8d29a6a1a5757256837aa9dd78e3cd0b5 (git)
Affected: 6856e4b65f64eeb3f17148f79b36c1d60c627529 , < ad52d61d82181dbdb7f05826de38352d5e550cc2 (git)
guessed Create a notification for this product.
Linux Linux Affected: 5.4
Unaffected: 0 , < 5.4 (semver)
Unaffected: 6.6.140 , ≤ 6.6.* (semver)
Unaffected: 6.12.90 , ≤ 6.12.* (semver)
Unaffected: 6.18.32 , ≤ 6.18.* (semver)
Unaffected: 7.0.9 , ≤ 7.0.* (semver)
Unaffected: 7.1 , ≤ * (original_commit_for_fix)
guessed Create a notification for this product.
Show details on NVD website
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "lessThan": "1db431380879fd9d28b763a88a0c0431be5be8df",
              "status": "affected",
              "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
              "versionType": "git"
            },
            {
              "lessThan": "32b153658f017ad2f5bf8aab479e8d16ac95bc3a",
              "status": "affected",
              "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
              "versionType": "git"
            },
            {
              "lessThan": "77d0b5d11387071770246fd0185a69fa28e8e109",
              "status": "affected",
              "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
              "versionType": "git"
            },
            {
              "lessThan": "047d44d8d29a6a1a5757256837aa9dd78e3cd0b5",
              "status": "affected",
              "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
              "versionType": "git"
            },
            {
              "lessThan": "ad52d61d82181dbdb7f05826de38352d5e550cc2",
              "status": "affected",
              "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
              "versionType": "git"
            }
          ]
        },
        {
          "defaultStatus": "affected",
          "product": "Linux",
          "programFiles": [
            "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
          ],
          "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
          "vendor": "Linux",
          "versions": [
            {
              "status": "affected",
              "version": "5.4"
            },
            {
              "lessThan": "5.4",
              "status": "unaffected",
              "version": "0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.6.*",
              "status": "unaffected",
              "version": "6.6.140",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.12.*",
              "status": "unaffected",
              "version": "6.12.90",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "6.18.*",
              "status": "unaffected",
              "version": "6.18.32",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "7.0.*",
              "status": "unaffected",
              "version": "7.0.9",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "*",
              "status": "unaffected",
              "version": "7.1",
              "versionType": "original_commit_for_fix"
            }
          ]
        }
      ],
      "cpeApplicability": [
        {
          "nodes": [
            {
              "cpeMatch": [
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.6.140",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.12.90",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "6.18.32",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.0.9",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                },
                {
                  "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                  "versionEndExcluding": "7.1",
                  "versionStartIncluding": "5.4",
                  "vulnerable": true
                }
              ],
              "negate": false,
              "operator": "OR"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Clear VRAM on allocation to prevent stale data exposure\n\nKFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE\nbut not AMDGPU_GEM_CREATE_VRAM_CLEARED, leaving freshly allocated\nVRAM with stale data from prior use observable by compute kernels.\n\nThe GEM ioctl path already sets VRAM_CLEARED for all userspace\nallocations via amdgpu_gem_create_ioctl() and\namdgpu_mode_dumb_create(). The KFD path was missing this flag,\nallowing stale page table remnants to leak into user buffers.\n\nThis causes crashes in RCCL P2P transport where non-zero data in\nptrExchange/head/tail fields corrupts the protocol handshake."
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-14T18:04:17.225Z",
        "orgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "shortName": "Linux"
      },
      "references": [
        {
          "url": "https://git.kernel.org/stable/c/1db431380879fd9d28b763a88a0c0431be5be8df"
        },
        {
          "url": "https://git.kernel.org/stable/c/32b153658f017ad2f5bf8aab479e8d16ac95bc3a"
        },
        {
          "url": "https://git.kernel.org/stable/c/77d0b5d11387071770246fd0185a69fa28e8e109"
        },
        {
          "url": "https://git.kernel.org/stable/c/047d44d8d29a6a1a5757256837aa9dd78e3cd0b5"
        },
        {
          "url": "https://git.kernel.org/stable/c/ad52d61d82181dbdb7f05826de38352d5e550cc2"
        }
      ],
      "title": "drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure",
      "x_generator": {
        "engine": "bippy-1.2.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
    "assignerShortName": "Linux",
    "cveId": "CVE-2026-46229",
    "datePublished": "2026-05-28T09:40:51.300Z",
    "dateReserved": "2026-05-13T15:03:33.106Z",
    "dateUpdated": "2026-06-14T18:04:17.225Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
    "epss": {
      "cve": "CVE-2026-46229",
      "date": "2026-09-30",
      "epss": "0.00162",
      "percentile": "0.04731"
    },
    "microsoft_vex": {
      "current_release_date": "2026-06-09T14:46:49.000Z",
      "cve": "CVE-2026-46229",
      "id": "msrc_CVE-2026-46229",
      "initial_release_date": "2026-05-02T00:00:00.000Z",
      "product_status:fixed": "1",
      "product_status:known_affected": "1",
      "source": "Microsoft CSAF VEX",
      "status": "final",
      "title": "drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure",
      "url": "https://msrc.microsoft.com/csaf/vex/2026/msrc_cve-2026-46229.json",
      "version": "3"
    },
    "nvd": {
      "cve": {
        "affected": [
          {
            "affectedData": [
              {
                "defaultStatus": "unaffected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "lessThan": "1db431380879fd9d28b763a88a0c0431be5be8df",
                    "status": "affected",
                    "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "32b153658f017ad2f5bf8aab479e8d16ac95bc3a",
                    "status": "affected",
                    "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "77d0b5d11387071770246fd0185a69fa28e8e109",
                    "status": "affected",
                    "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "047d44d8d29a6a1a5757256837aa9dd78e3cd0b5",
                    "status": "affected",
                    "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
                    "versionType": "git"
                  },
                  {
                    "lessThan": "ad52d61d82181dbdb7f05826de38352d5e550cc2",
                    "status": "affected",
                    "version": "6856e4b65f64eeb3f17148f79b36c1d60c627529",
                    "versionType": "git"
                  }
                ]
              },
              {
                "defaultStatus": "affected",
                "product": "Linux",
                "programFiles": [
                  "drivers/gpu/drm/amd/amdgpu/amdgpu_amdkfd_gpuvm.c"
                ],
                "repo": "https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git",
                "vendor": "Linux",
                "versions": [
                  {
                    "status": "affected",
                    "version": "5.4"
                  },
                  {
                    "lessThan": "5.4",
                    "status": "unaffected",
                    "version": "0",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.6.*",
                    "status": "unaffected",
                    "version": "6.6.140",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.12.*",
                    "status": "unaffected",
                    "version": "6.12.90",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "6.18.*",
                    "status": "unaffected",
                    "version": "6.18.32",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "7.0.*",
                    "status": "unaffected",
                    "version": "7.0.9",
                    "versionType": "semver"
                  },
                  {
                    "lessThanOrEqual": "*",
                    "status": "unaffected",
                    "version": "7.1",
                    "versionType": "original_commit_for_fix"
                  }
                ]
              }
            ],
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67"
          }
        ],
        "configurations": [
          {
            "nodes": [
              {
                "cpeMatch": [
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "91EB24C2-4F74-4D8B-81CB-95D00FCFF24C",
                    "versionEndExcluding": "6.6.140",
                    "versionStartIncluding": "5.4",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "3BAAA2BE-6EEC-45D5-AD66-50F63CA20483",
                    "versionEndExcluding": "6.12.90",
                    "versionStartIncluding": "6.7",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "CB9F1FA8-6D5E-42B1-9877-57BACFE5C886",
                    "versionEndExcluding": "6.18.32",
                    "versionStartIncluding": "6.13",
                    "vulnerable": true
                  },
                  {
                    "criteria": "cpe:2.3:o:linux:linux_kernel:*:*:*:*:*:*:*:*",
                    "matchCriteriaId": "33ACA10B-B260-46EA-BD50-70EBE5097672",
                    "versionEndExcluding": "7.0.9",
                    "versionStartIncluding": "6.19",
                    "vulnerable": true
                  }
                ],
                "negate": false,
                "operator": "OR"
              }
            ]
          }
        ],
        "cveTags": [],
        "descriptions": [
          {
            "lang": "en",
            "value": "In the Linux kernel, the following vulnerability has been resolved:\n\ndrm/amdkfd: Clear VRAM on allocation to prevent stale data exposure\n\nKFD VRAM allocations set AMDGPU_GEM_CREATE_VRAM_WIPE_ON_RELEASE\nbut not AMDGPU_GEM_CREATE_VRAM_CLEARED, leaving freshly allocated\nVRAM with stale data from prior use observable by compute kernels.\n\nThe GEM ioctl path already sets VRAM_CLEARED for all userspace\nallocations via amdgpu_gem_create_ioctl() and\namdgpu_mode_dumb_create(). The KFD path was missing this flag,\nallowing stale page table remnants to leak into user buffers.\n\nThis causes crashes in RCCL P2P transport where non-zero data in\nptrExchange/head/tail fields corrupts the protocol handshake."
          }
        ],
        "id": "CVE-2026-46229",
        "lastModified": "2026-06-17T10:53:22.453",
        "metrics": {
          "cvssMetricV31": [
            {
              "cvssData": {
                "attackComplexity": "LOW",
                "attackVector": "LOCAL",
                "availabilityImpact": "HIGH",
                "baseScore": 5.5,
                "baseSeverity": "MEDIUM",
                "confidentialityImpact": "NONE",
                "integrityImpact": "NONE",
                "privilegesRequired": "LOW",
                "scope": "UNCHANGED",
                "userInteraction": "NONE",
                "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H",
                "version": "3.1"
              },
              "exploitabilityScore": 1.8,
              "impactScore": 3.6,
              "source": "nvd@nist.gov",
              "type": "Primary"
            }
          ]
        },
        "published": "2026-05-28T10:16:38.520",
        "references": [
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/047d44d8d29a6a1a5757256837aa9dd78e3cd0b5"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/1db431380879fd9d28b763a88a0c0431be5be8df"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/32b153658f017ad2f5bf8aab479e8d16ac95bc3a"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/77d0b5d11387071770246fd0185a69fa28e8e109"
          },
          {
            "source": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
            "tags": [
              "Patch"
            ],
            "url": "https://git.kernel.org/stable/c/ad52d61d82181dbdb7f05826de38352d5e550cc2"
          }
        ],
        "sourceIdentifier": "416baaa9-dc9f-4396-8d5f-8c081fb06d67",
        "vulnStatus": "Analyzed",
        "weaknesses": [
          {
            "description": [
              {
                "lang": "en",
                "value": "NVD-CWE-noinfo"
              }
            ],
            "source": "nvd@nist.gov",
            "type": "Primary"
          }
        ]
      }
    },
    "redhat_vex": {
      "aggregate_severity": "Moderate",
      "current_release_date": "2026-08-01T14:13:22+00:00",
      "cve": "CVE-2026-46229",
      "id": "CVE-2026-46229",
      "initial_release_date": "2026-05-28T00:00:00+00:00",
      "product_status:known_affected": "274",
      "source": "Red Hat CSAF VEX",
      "status": "final",
      "title": "kernel: drm/amdkfd: Clear VRAM on allocation to prevent stale data exposure",
      "url": "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-46229.json",
      "version": "3"
    },
    "suse_vex": {
      "aggregate_severity": "important",
      "current_release_date": "2026-09-19T01:55:22Z",
      "cve": "CVE-2026-46229",
      "id": "CVE-2026-46229",
      "initial_release_date": "2026-05-29T01:14:43Z",
      "product_status:first_fixed": "2",
      "product_status:known_affected": "420",
      "product_status:known_not_affected": "166",
      "product_status:recommended": "446",
      "source": "SUSE CSAF VEX",
      "status": "interim",
      "title": "SUSE CVE CVE-2026-46229",
      "url": "https://ftp.suse.com/pub/projects/security/csaf-vex/cve-2026-46229.json",
      "version": "14"
    }
  }
}



Log in or create an account to share your comment.




Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.